Yeah I had the same Free GCU on my receipt. Checked on My Best account and it shows my membership is good until June 2016. I checked their forum and it's a known issue apparently.
Did pretty well this morning:
-Madden Xbox One $360
-Madden 15 free (next best to trade as they were out of Diablo 3)
-Xbox One controller $45
-extra 2 years of GCU (supposedly)
-traded Madden for $43
-sold Madden code for $40
Overall I spent $405 (before tax) for an Xbox One plus 2nd controller and got back $83 from selling/trading, not to mention an extra $20 in rewards from my BB credit card. This will be for my wife for her b-day in November, just in time for the Halo collection!
Picked up Lego Hobbit on PS4 today. Got the $10 gift card, but they were also offering $20 off when you sign up for the Best Buy credit card, so with my GCU only paid $30 for the game out of pocket and got a free $10 gift card!
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